the idea how energy relates to these things. it's the knowing how hot-- how much energy is gonna flow. and we get that idea. we make these distinctions. you guys know when you go on the top of the mountains, it's cold up there. but you're closer to the sun, right? in the top of the mountains, it's cold. and somebody say, "hey, how come it's so cold up here?" so--we're closer to the sun. wait, no, no, no. that should make us hotter. you guys know when you're approaching the sun, it gets hotter and hotter, don't you? have you known that? i mean, you can get in the best ceramic materials that the humans can make. you get within a million miles of that sun. honey, you're gonna fry to a crisp, a million miles from the sun, unless you go at nighttime. [laughter] hey, but the point, back again, you're up at the top of the hill and it's cool up there. and you know what you can tell your friends? hey, gang, you know why it's so cool up here? because warm air rises. let me ask you a question, does warm air rise? you guys know about that from before? did you guys know that you get in the top of
